Coal burning boiler energy efficiency monitoring method

The invention provides a coal burning boiler energy efficiency monitoring method. On-line monitoring and manual analysis are combined to monitor the coal burning boiler energy efficiency in real time. The method comprises the following steps: taking a coal sample from the boiler field, analyzing the carbon content of the coal, and measuring the actual coal burning amount of the boiler within several hours, thereby calculating the average gross heating value per hour of the coal burning boiler within the several hours; acquiring necessary data of the boiler, and calculating effective heat supply amount, flue gas heat loss, gas incomplete combustion heat loss and the like, thereby calculating the heat efficiency of the boiler and estimating the heat loss fluctuation smaller value in the boiler operation process; and finally, implementing on-line real-time monitoring on the boiler efficiency by monitoring the effective heat supply amount, heat loss fluctuation major bigger value and the calculated heat loss fluctuation smaller value in real time, thereby implementing the goal of enhancing the coal burning boiler energy efficiency in real time.